Moles in chemistry refer to a unit of measurement used to express the amount of a substance. It is defined as the amount of a substance that contains as many entities (such as atoms, molecules, or ions) as there are atoms in exactly 12 grams of carbon-12, which is Avogadro's number (6.022 x 10^23). So, one mole of any substance contains Avogadro's number of entities.
Moles are used to make relative comparisons between different substances, calculate the stoichiometry of chemical reactions, and determine the amount of reactants needed or products produced in a reaction. Additionally, moles are used to quantify the mass of a substance, as the molar mass (mass of one mole of a substance) is numerically equal to the atomic or molecular weight of that substance.
What are moles in chemistry
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